Garmin Raises The
Bar With GTN 650 And 750 Touchscreen Avionics
By Jim Douglas
25, 2011 - Garmin has raised the bar with the announcement
of the GTN 650 and GTN 750 series. These panel-mount units
are certified and approved for installation in hundreds of
makes and models of general aviation aircraft.
GTN 650 and GTN 750 feature new capabilities for GPS/NAV/COM
systems like touchscreen operation, graphical flight
planning with victor airways and high-altitude jet routes,
remote transponder, remote audio control (750 series only),
SafeTaxi and electronic chart capabilities (750 series
the successors to the very popular GNS 430W and 530W, the
GTN 650 and 750 have big shoes to fill. We’re confident that
the GTN series will set a new standard on what avionics for
general aviation aircraft should be, just as the GNS 430 and
530 did when they were announced in 1998,” said Gary Kelley,
Garmin’s vice president of marketing.
GTN 650 and 750 are the first touchscreen avionics certified
for general aviation aircraft. Although some may think the
touchscreen operation is the most unique feature of these
systems, we believe the interface and expansive new
capabilities are even more innovative.”
most notable physical difference between the GTN 650 and 750
is the screen size. The GTN 650 has the same exterior
footprint as the GNS 430W, but has a 4.9-inch screen
(diagonal) that has 53 percent more screen area than the GNS
GTN 750’s large 6.9-inch screen (diagonal) has 98 percent
more screen area than the GNS 530W, which makes it possible
to view an entire chart via Garmin FliteCharts and ChartView,
as well as display integrated audio and intercom functions
(with the new optional GMA 35 remote mount audio processor).
In addition, both units display a greatly enhanced, higher resolution picture (GTN 650: 600x266 pixels; GTN 750: 600x708 pixel) that has over 5 times more pixels than the GNS 430W and 530W, respectively.
planning made easy, the GTN series offers graphical flight
planning capability (patent pending) so that pilots can edit
an active flight plan route on the map and easily enter a
new waypoint or modify the sequence by tapping or dragging
their finger on the screen. Victor airways and high-altitude
jet routes can be overlaid on the moving map, and airway
segments can be selected onscreen for instant entry into a
system has a unique “rubber band” feature that lets pilots
select a flight plan leg on the screen and then alter it to
accommodate a deviation or ATC amendment. In addition,
pilots can pan across the map display by swiping their
finger across the screen.
Enhanced situational awareness, thanks to built-in terrain,
mapping and obstacle databases, the GTN provides a greatly
enhanced, high resolution presentation of the surrounding
area. A built-in terrain elevation database shows
color-coded alerts when potential terrain conflicts are
Class B TAWS alerting is also available as an option. The
SBAS/WAAS equipped GTN 650 and 750 let pilots fly GPS-guided
LPV glidepath approaches down to ILS-comparable minimums. In
addition, precise course deviation and roll steering outputs
can be coupled to select autopilots so that IFR flight
procedures may be flown automatically.
Add weather, traffic and more because the GTN offers a wide array of compatibility with select Garmin avionics and sensors, Garmin has made it possible to have a consistent and intuitive interface to other systems – like audio and transponder – by creating simplified systems management functionality on the GTN flightdeck.
valuable panel space, Garmin’s new GMA 35 remote mount audio
processor (optional) interfaces with the GTN 750 and makes
it possible for the GTN to be used as a touchscreen control
head for the aircraft’s audio and intercom functions.
The GMA 35 helps streamline cockpit communications with record/playback capability for copying clearances. It also includes an internal microphone that senses the amount of ambient noise and automatically adjusts the cockpit speaker and the headset volume based on the level of noise in the cockpit.
Garmin’s GTX 32/33/33D remote transponders (optional) also
interface with the GTN 650 or 750 so that pilots can control
transponder function from the GTN’s display. Optional
versions of the GTX 33/33D mode S transponders are available
which support ADS-B/Out.
Optional XM WX Satellite Weather™, lightning, and traffic
system inputs are also supported and may be overlaid on the
moving map. In addition, XM radio is available as an option
(XM WX Satellite Weather™ and radio service is only
available to U.S. and Canadian customers with a subscription
and with an optional GDL 69 series datalink receiver).
The standard GTN 650 and GTN 750 feature a 10-watt COM, and a field upgradeable 16-watt version is also available. In third quarter 2011, Garmin will make available a GTN 725, which is similar to the GTN 750, and is a GPS only unit. Also, a GTN 625 will be available that is a GPS only unit, and a GTN 635 that is a GPS unit with VHF Communications radio. All units are SBAS/WAAS enabled.
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